Hi Carlos , 

I haven't looked yet but is MoorDyn also open source? 

I had posted some questions regarding Mooring damping and stiffness and what I thought was the
 correct application of the matrix. 

I think it would be really helpful to the user to see a drawing of how the matrix is used base on the
 geometry of the device and how the equations are applied. I am still a little fuzzy on some I this 
myself. 

That being said, we are assuming that if we use damping on the spherical joint in the example we 
posted that this can be resolved to forces in x,y and z based on the connection points of the morning 
lines. Then, the rotational damping*rotational velocity in that axis is equal to torque, and that torque 
divided by the effective torque arm length to the mooring connection will be the magnitude of the 
catenary mooring force which can be resolved into its components. Does this sound correct? 

Thanks , 

Alex